Direct Evidence for Dynamic Broadening of the Energy Spectra Associated with the Later Steps of an Auger Cascade

Journal Article · Fri Sep 19 00:00:00 EDT 2008 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.101.127601· OSTI ID:21179740

Sundaramoorthy, R; Weiss, A H ^[1]; Hulbert, S L ^[2]; Bartynski, R A ^[3]

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1. Physics Department, University of Texas at Arlington, Arlington, Texas 76019 (United States)
2. NSLS, Brookhaven National Laboratory, Upton, New York 11973 (United States)
3. Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854 (United States)

Auger cascade decay processes are of critical importance in x-ray-induced biological damage, chemical reactions, and desorption. Here, we report the first measurements of the isolated energy spectra of electrons emitted during the later steps of an Auger cascade process in a solid (MnO). The large widths and energy gains observed in cascade-induced Mn MVV Auger spectra (as compared to the spectra resulting from direct photoexcitation of the M core hole) provide strong evidence that valence holes created in previous cascade steps participate dynamically in later cascade steps.

• OSTI ID: 21179740
• Journal Information: Physical Review Letters, Vol. 101, Issue 12; Other Information: DOI: 10.1103/PhysRevLett.101.127601; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BIOLOGICAL RADIATION EFFECTS
CHEMICAL REACTIONS
DAMAGE
DESORPTION
ELECTRON EMISSION
ELECTRONS
ENERGY SPECTRA
MANGANESE OXIDES
X RADIATION